201189925764 has 45 divisors (see below), whose sum is σ = 525971314407. Its totient is φ = 67060617336.

The previous prime is 201189925753. The next prime is 201189925787. The reversal of 201189925764 is 467529981102.

It is a happy number.

The square root of 201189925764 is 448542.

It is a perfect power (a square), and thus also a powerful number.

201189925764 is a `hidden beast` number, since 201 + 189 + 9 + 257 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 201189925764.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 8061297 + ... + 8086215.

Almost surely, 2^201189925764 is an apocalyptic number.

201189925764 is the 448542-nd square number.

It is an amenable number.

201189925764 is an abundant number, since it is smaller than the sum of its proper divisors (324781388643).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201189925764 is an frugal number, since it uses more digits than its factorization.

201189925764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49854 (or 24924 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 201189925764 in words is "two hundred one billion, one hundred eighty-nine million, nine hundred twenty-five thousand, seven hundred sixty-four".